Improvement in machines for making horseshoe-nails



. A. SHAW.

Horseshoe-Nail Machine. v No.- 72,550. Patented Dec. 24, 1867.

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ADRIAN SHAW, 'OF WESTFORD', MASSACHUSETTS.

IMPROVEMENT lN- MACHINES FGRE IIAKI NG HOR-SESHOE-NA'I'LS.

Specification forming part of Letters Patent No. 72.,55'0', dated December 24, 1867.

To all whom it may concern.-

Be it known that I, ADRIAN SHAW, of Westford, Middlesex county, Massachusetts, have invented new and useful Improvements in Nail-Machines and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawin gs, forming part of this specification.

The present invention relates to improvements in nail machines, more particularly of that class of such machines for the manufacture of horseshoe-nails; and this invention consists, principally, in hanging the hammer or hammers to the outer ends of a revolving beam or cross arm in such a manner that as such beam revolves the hammers will thereby be swung down and upon the anvil-block, which at the same time moves upward, then recedes, and, moving down again at the same time as the helve of the hammer, draws downward from the anvil block by the continued rotation of the helve and beam carrying the same. By this mode of hanging and operating the hammer or hammers, a peculiar blow is given by the hammer to the metal blank or strip to be hammered on the anvil,whereby such blank, from one end to the other, will be hammered and drawn out into the taper form desired, the nail-blank being hammered upon its sides by means of side hammers suitably arranged and operated therefor, and by means of a novel arrangement of devices, to be hereinafter described.

In the accompanying plate of drawings my improvements in machines for making nails are illustrated, Figure 1 being a plan or top view of the machine, and Fig. 2 a central longitudinal vertical section, with some portions inside elevation.

Similar letters of reference indicate corresponding parts.

A in the drawings represents the support ing frame-work of the machine, which may be of any suitable construction to receive its working or operating parts; B, the drivingshaft, hung in suitable bearings of the framework A, extending across from one side frame to the other; 0, gear wheel on one end of shaft B, which gear-wheel, through an intermediate gear-wheel, D, is connected with a gear-wheel, E, upon one end of a transverse horizontal shaft, F, hung in hearings to the upper portion of the frame-work. To the shaft F, and about midway between the two side frames of the frame-work A, a cross-beam, G, is fastened or keyed in any suitable manner. H, hammer-heads, hung and pivoted by their helves or handles I in and to the outer ends of the cross beam G, one hammer to each end. These hammers swing upon the beam, but are limitedin their play or swing by the shoulders to of the handlescoming to a bearing or a stop against the lug or projection b of the beam G, suitably located therefor. J, the anvil-block, secured to upper end of a post, K, arranged to move up and down at one end of the framework A, this anvil-block being suitably loeated for the hammers as they swing and pass around to strike the same, and by its post lifted through a lifting lever, L, hung t0 the frame-work A, and operated by and through a suitable arm or cam, M, securedto the drivin g -shaft B in proper position therefor; N, the two hammers, arranged one upon each side of the anvil-block. These hammers are hung so as to swing in one and the same horizontal plane toward and away from the anvil-block, and are each so hung within a similar box or casing, '0, upon each side of the anvil block.

These casings O are permanently affixed to the side frames of the frame-work correspond ing thereto. To each side hammer N one end of connecting-rods P is hung, one red to each hammer, which rods at their other ends are pivoted or hung to slidebars Q, arranged to move through the box or casings O to the hanv mers. To the inner ends of the slide bars Q the vertical levers R are hung, one to each slide. made of a hook shape, and through such hookshaped ends they are operated by the cams or arms S to the hammer-beamshaft as such shaft revolves, springs T being connected with the vertical levers R, for throwing them back to their original position after each operation of the cams or arms S therein.

Over the anvil-block the metal strip or blank from which the nails are to be made and drawn is properly fed along and to the anvil block, while by revolving the beam carrying the ham- The upper ends of these levers R are,

mers such hammers are brought or swung down upon the said metal blank strip, thus hammering it upon its upper side, while by the action of the side hammers it is hammered upon its sides, the several hammers together acting and giving the desired taper or wedge ships to the blank strip, which, after being so struck or hammered up, is out off from the strip by the upward movement of the post carrying the anvil block, as in ordinary nail-making machines.

By the manner in which the hammers are hung to the revolving beam they act upon the metal blank with a drawing blow from one end of the anvil to the other, thus producing a more perfect hammering of the blank into the desired nail shape.

ADRIAN SHAW.

\Vitnesses WM. F. MQNAMARA, ALBERT W. BROWN. 

